Slidable closure lock



' Sept. 17, 1963- F. D. cRosswELL 3,103,805

SLIDABLE CLOSURE LOCK Z-fl F/gy (fassa/@ 4 7 wg BY 4, j @MM ATTORNEYSept. 17, 1963 Filed Jan. 8, 1962 cRosswELL 3,103,805

SLIDABLE CLOSURE LOCK 3 Sheets-Sheet 2 W ON INVENTOR.

55767 D. 0mm/6N ATTORNEY.

Sept. 17, 1963 F, D, cRos 3,103,805

SLIDABLE cLosU CK Filed Jan. 8, l1962 3 Sheets-Sheet 3 TTORNEY,

United States Patent O 3,103,805 SLIDABLE CLGSURE LOCK Flay D.Crosswell, Hartford City, Ind., assignor vto Overhead Door Corporation,Hartford City, Ind. Filed Ilan. 8, 1962, Ser. No. 164,716 15 Claims.(Cl. 70-142) This invention relates to a lock for reciprocatinglymounted closures such as upwardly acting doors and the like. The mainobjects of this invention are,

First, to provide a lock for upwardly acting closures and the like whichmay be opened trom either side.

Second, to provide an upwardly acting door or closure lock means whichis particularly desirable for use on upwardly acting doors or closuresfor vehicles in which the closure is securely anchored to the sill andin a manner to prevent substantial vibration thereof relative to thesill, thereby preventing noise and minimizing wear on the parts.

Third, to provi-de -a locking means having these advantages which can beopened from the inner side ot the door Without the aid of a key, 'butwhich may be locked from the outer side to prevent opening of theclosure without the aid of a key.

Objects relating to details and economies of `the invention will appearfrom the description to follow. The invention is deiined and pointed outin the claims.

A preferred embodiment of the invention is illustrated in theaccompanying drawing, in which:

FIG. 1 is a rear view of a truck or trailer embodying my invention.

FIG. 2 is .a fragmentary inside view of a lock means embodying myinvention illustrated in operative relation to a sill, which is shown inlongitudinal section, the closure being shown in closed positionrelative to the sill.

FIG. 3 is an inside perspective view of a lock unit embodying myinvention, the keeper which is attached to .the sill not beingillustrated.

FIG. 4 is a fragmentary view on a line lcorrespon-ding to line 4--4 ofFIG. 6, the bolt being shown in keeper disengaging position by dottedlines and the key actuated lock member -being shown in retractedposition also by dotted lines.

FIG. 5 is an inside View of the inner casing member.

FIG. 6 is a horizontal section on a line corresponding to line 6-6 ofFIGS. 4 and 5.

FIG. 7 is #an enlarged fragmentary vertical view partially in section ona line corresponding to line 7-7 of FIG. 2.

FIG. 8 is a plan view of the keeper in reverse position from that shownin FIG. 2.

FIG. 9 is an enlarged fragmentary view on aline corresponding to brokenIl-ine 9-9 of FIG. 4, illustrating details of the locking detent. y

FIG. 10 is :a fragmentary view of parts illustrated in FIG. 2 with the4closure in slightly raised position.

I have illustrated my invention as embodied in a tru'ck or the like asit is especially adapted in such use, although it should lbe understoodthat it is ladapted for use for closures, particularly of the upwardlyAacting type for various uses.

In the accompanying drawing, 1 represents the body of a vehicle, 2 thedoor frame, and 3 the sill. rFhe door, designated generally by thenumeral 4, is of the upwardly acting sectional type, the sections'having hinge connections not here illustrated, as the door structuraldetails and the hinge connections are of various types and such detailsform no part of my present invention.

The embodiment of my invention illustrated comprises `an inner casingmember S having `a substantially flat body portion with an integral|bottom wall 6 having a bolt receiving opening therein designated by thenumeral S prolCe vided with `a downwardly projecting tiange 9 whichconstitutes bolt stops, and -a bolt guard when the door is in closedposition and ya keeper engaging member, see FIG. 2. This inner casingmember is provided with integral bearings for the several movable partswhich will Abe reerred to as the movable parts are described. It is alsoprovided with stops for certain of the movable parts. One structuraladvantage is that this member may be formed as a stamping.

The outer casing member 10 Ihas inwardly projecting side walls 11 havingoutwardly projecting llanges 12 disposed in overlapping relation to theinner `casing member and secured thereto by bolts I3, the ybolts in theembodiment illustrated 'also serving to clamp the lock as a unit to theb-ottom section 14 of the closure, the heads of the bolts being on theouter side of the `closure and the nuts on the inner side. The outercasing member is provided with a top wall 15 and its `front and sidewalls overlap or enclose the casing bottom wall 6. Thus arranged, themovable parts are `all effectively housed, except the projecting end ofthe holt which must project to engage the keeper, designated generallyby the numeral 17, .and which is xedly mounted as by welds indicated atI8, see FIG. 2, to the sill 3. The bolt 19 is pivotally or swingablymounted on the bearing member 20 on the casing member 5 with its keeperengaging jaw 21 projecting through the opening in the bottom wall 6,which is dimensioned to permit keeper disengaging movement of the bolt,which position is shown by dotted lines in FIGS. 2 and 4. The bol-t isyieldably urged to keeper engaging position by the spring 22, which ismounted on 'the lock 23 struck up from the casing member 5, the otherend of the spring being engaged in a seat 24 provided therefor in thebolt, see FIG. 4.

The bolt releasing member 25 is pivotally mounted on the projectingbearing or support member 26 on the casing and is provided with anoncircular opening 27 wit-h which the `stern of the handle 2S isengaged, 4this handle being on the inner side of this locking means sothat the door can be released from the inside Iof the vehicle withoutthe use of a key.

A stop 29 is provided to Limit the retracting movement of the member 25,but it has no other functional purpose. The `lock is provided with anupwardly projecting arm 30 of substantial length which is yieldinglyurged by the spring 22 against the second bolt release member 31, whichis povotally mounted on the bearing member 32 struck up lfrom the casingmember 5 which is provided with a stop 33 for the member 3-1, the springacting on the bolt normally yieldingly urging the release member 31against -this stop, the actuated posi-tion of the member 31 beingillustrated by dotted lines. The member 31 is actuated lfrom the handleor hand piece 34 shown by dotted lines in FIG. l2 and -by full lines inFIG. 1. The details of securing the Shanks of the handles to the partsare not illustrated, but attention is :direc-ted to FIG. 6 in which thebearing portion 35 is supported in the bearing member 32 on the innercasing member, and an aligned bearing portion 36 on the outer casingmember. In considering these parts, it should lbe borne in mind thatthey are designed to minimize structural oost. The bolt actuating member31 is 'locked by -the bolt detent 37 pivot-ally mounted on the bearingmember 38 on the inner casing member, which is engageable with theprojecting portion ,58 on the end of the member 31. This bolt detent orlock member 37 Iis provided with a slot -39- into which the lug 44B onthe key actuated member 41 engages. The details of the lock member,:designated generally by the numeral 42, are not illustrated as they areof 'a commer` cial type with the addition thereto of the detent engaginglug. The lock member is mounted on the bracket 43 which has a tubularbushing portion 44 projecting through an opening 45 provided therefor inthe closure member, see FIG. 9. As stated, the keeper 17 is providedwith a downwardly inclined lug 46 with which the bolt engages when theclosure is in completely closed position, see FIG. 2, and the downwardlyprojecting tiange 9 on the bolt opening in the casing bottom member 6projects into the bolt receiving opening of the keeper with the closurein closed posi-tion, see FIG. 2, and this provides a guard for the bolts-o that it cannot be manipulated from the outer side of the door.

To properly align the closure and prevent vibration thereof, the closurealigning and anchoring member 47 is provided, this desirably having apointed outer end 43 which projects through an opening in the keeperformed by `a downwardly projecting flange 49, the anchor member being asliding tit in the ange of this opening, thereby performing a double-function of guiding the closure to locking position and to minimizevibration. This member 47 is provided with an upwardly projecting partSG overlapping the ilan-ge 12 of the lock member and secured thereto Ibysome of the attaching bolts, see FIGS. 2, 3 and 6. With the parts thusarranged, a very secure locking means is provided, one in which all ofthe parts are on the inner side of the closure, except the outer end ofthe key actuated member 42 and the bolt heads and handle 34. The partsof my invention may be economically produced and assembled and whenassembled provide a very strong and rigid structure.

I have illustrated and described my invention in a highly practicalembodiment thereof. I have not attempted to illustrate or describemodications and adaptations to particular closures, as it is believedtha-t this disclosure will enable those skilled in the art to embody myinvention to meet particular structural conditions. As stated,`rnyinvention is particularly desirable `for use in connection with upwardlyacting closures of trucks, motor vehicles, rai-lway cars, and the like.However, certain features of my invention are adapted for use and arehighly desirable for use in closures of the reciprocating type instationary structures.

Having thus described the invention, what is claimed as new and desiredto secure by Letters Patent is:

l. The combination with a sill and a closure Amember reciprocatinglymounted for opening and closing `adjustment relative to the sill, means-for releasably and lockingly securingsaid closure member to said sillcomprising an inner casing member having an outwardly projecting bottomwall with a bolt opening therein with a downwardly projecting flangeconstitu-ting bolt stops and a keeper engaging and bolt guard member,said inner casing member having bearings integral therewith yfor movableelements mounted within the casing, an outer casing -member havinginwardly projecting top and side walls, the side walls having angesoverlapping and tixedly secured to said inner casing member, a boltswingably mounted on one of said bearings `on said inner casing memberand having a keeper engaging portion projecting through said opening inthe casing bottom wall, said bolt having an arm projecting upwardly fromits pivot, a bolt actuating spring mounted on said inner casing member,a irst bolt release member pivotally mounted on said inner casing memberand positioned to engage said bolt below its pivot and provided with ahandle disposed on the outer side of said outer casing member, a secondbolt release member mounted on said inner casing member in coactingrelation with the upwardly projecitng arm of said bolt, said innercasing member having a stop for said second bolt release member, ahandle and lock supporting bracket mounted on the outer side of saidclosure member and includingV a lock support member -projecting lthroughsaid closure member and into an opening provided therefor in said innercasing member, a handle for said second bolt 4release member mounted onsaid bracket, lock means mounted in said lock support and including akey actuated member provided with an eccentrically disposed lugprojecting into said casing, a bolt detent pivotally mounted on saidinner casing member 4for locking engagement with said second boltrelease member and having a slot therein into which said llug on `saidkey actuated member projects, a keeper mounted on said sill and having abolt receiving opening therein and into which said bolt stops on saidcasing bottom member project when the closure is in closed position andwhich constitutes a guard for said bolt when it is in keeper engagingposition, said keeper having a second opening therein surrounded by aninwardly converging flange, and a closure aligning and anchor memberhaving a tapered tip mounted on said casing to project `downwardly fromthe bottom edge thereof into guiding and lateral supporting engagementwith said second opening in said keeper and having a sliding engagementtherein.

2. The combination `with a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, means`for releasably and lockingly securing said closure member to said sillcomprising an inner casing member having an outwardly projecting bottomwall with a bolt opening therein, said inner casing member vhavingbearings integral therewith for movable elements mounted within thecasing, an outer casing member having inwardly projecting top and sidewalls, the side walls having anges overlapping and xedly secured ytosaid inner casing member, a bolt swingably mounted on one of saidbearings on said inner casing member and having a keeper engagingportion projecting through said opening in the casing bottom wall, saidbolt having an arm. projecting upwardly from its pivot, Aa boltactuating spring mounted on said inner casing member, a rst bolt releasemember pivotally mounted on said inner casing member and positioned toengage said bolt below lits pivot and provided with a handle disposed onthe outer side of said outer casing member, a second bolt release membermounted-on said inner casing member in coacting relation with theupwardly projecting arm of said bolt, said inner casing member haivng astop for said second bolt releasemember, -a handle and lock supportingbracket mounted on the outer side of said closure member and including alock `support member projecting through said closure member and into anopening provided therefor in said inner casing member, a handle vforsaid second bolt release member mounted on said bracket, lock meansmounted in said lock support and including a key actuated memberprovided with an eccentrically disposed lug projecting into said casing,a bolt detent pivotally mounted on said inner casing member for lockingengagement with said second bolt release member and having -a s-lottherein into which said lug on said key actuated member projects, akeeper mounted on said sill and having a bolt receiving opening therein,said keeper having a second opening therein surrounded by an inwardlyconverging flange, and a closure aligning and anchor member having atapered tip mounted on said casing to project downwardly `from thebottom edge thereof into guiding and lateral supporting engagement withsaid second opening Yin said keeper and having a sliding engagementtherein.

3. The combination wi-th a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, means-for releasably and lockingly securing said closure member to said sillcomprising a casing including an inner casing member having an outwardlyprojecting lbottom wall with a bolt opening therein with a downwardlyprojecting ange constituting bolt stops and a keeper engaging and boltguard member, an outer casing member having inwardly projecting top andside walls, the side walls Ihaving tlanges overlapping and xedly securedto said inner casing member, a bolt pivotally -mounted in said casingand having a keeper engaging portion projecting through said opening inthe casing bottom wall, said holt having an arm projecting from itspivot, a bolt actuating spring mounted in said casing, a iirst boltrelease member pivotally mounted in said casing and positioned to engagesaid bolt below its pivot and provided with a handle disposed on theouter side of said outer casing member, a second 'bol-t release memberpivotally mounted in said casing in coacting relation with the said armof said bolt, a handle and Ilock supporting bracket including a llocksupport member projecting through said closure member and into anopening provided therefor in said inner casing member, a handle for-said second bolt release member mounted on said bracket, lock meansmounted lin said lock support and including a key `actuated memberprovided with an eccentrioally disposed ilu-g projecting into saidcasing, a

bolt detent pivotally 4mounted in said casing in coacting relation tosaid second bolt release member and having a slot therein into whichsaid lug on said key actuated member projects, .a keeper mounted on saidsill and having `a bolt receiving opening therein land into which saidbol-t stops on lsaid casing project when the closure is in closedIposition and which constitutes a guard for said bolt when it is inkeeper engaging position, said keeper having `a 'second opening thereinsurrounded by an inwardly converging iiange, and a closure Valiginingand anchor member mounted on :sai-d casing to project downwardly fromthe bottom edge thereof into `guiding and lateral supporting engagementwith said second opening in said keeper and having a sliding engagementtherein.

4. The combination with a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, means-for releasably and lockingly securing said closure member to said sillcomprising a casing including an inner casing member having an out-Wardly projecting bottom wall with a bolt opening therein, an outercasing member having inwardly projecting top and side walls, the sidewalls having flanges overlapping =and iixedly secured to said innercasing member, a bolt pivotally mounted in said casing and having akeeper engaging portion projecting through said opening in the casingbottom wall, said bolt having an arm projecting from its pivot, a boltactuating spring mounted in said casing, a tirst bolt release memberpivotally mounted in said casing and positioned to engage said boltbelow its pivot and provided with a handle disposed on the outer side ofsaid outer casing member, a second bolt release member pivotally mountedin said casing in coacting relation with the said arm of said bolt, ahandle and lock supporting bracket including a lock support memberprojecting through said cl-osure member and into an opening providedtherefor in said inner casing member, a handle for said second boltrelease member mounted -on said bracket, lock means mounted in said locksupport and including a key actuated member provided with aneccentrically disposed lug projecting into said casing, a bolt detentpivotally mounted in said casing in coacting relation to said secondbolt release member and having a slot therein into which said lug onsaid key actuated member projects, a keeper mounted on said sill landhaving a bolt receiving opening therein, and a closure aligning andanchor member mounted on said casing to project downwardly from thebottom edge thereof into guiding `and lateral supporting engagement withsaid second opening in said keeper and having `a sliding engagementtherein. Y

5. The combination with a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, meansfor releasably land lockingly securing said closure member to said sillcomprising a casing including an inner casing member having an outwardlyprojecting bottom Wall with a bolt opening therein, an outer casingmember having inwardly projecting top and side walls, a bolt pivotallymounted in said casing and having a keeper engaging portion projecting-through said opening in the casing bottom wall, said bolt having an armprojecting from its pivot, a bolt actuating spring mounted in saidcasing, a first bolt release member pivotally mounted in said casing andpositioned to engage said bolt below its pivot and provided with ahandle disposed on the outer side of said outer casing member, a secondbolt release member pivotally mounted in said casing in coactingrelation with the said arm of said bolt, a handle and lock supportingbracket including a lock Support member projecting through said closuremember and into an opening provided therefor in said inner casingmember, a handle for said second bolt release member mounted on saidbracket, lock means mounted in said lock support and including a keyactuated member provided with an eccentrically disposed lug projectinginto said casing, a bolt detent pivotally mounted in said casing incoacting relation to said second bolt release member and having a slottherein into which said lug on said key actuated member projects, and akeeper mounted on said sill and having a bolt receiving opening therein.

6. The combination with a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, meansfor releasably and lockingly securing said closure member to said sillcomprising a casing including an inner casing member having anou-twardly projecting bottom wall with a bolt opening therein with adownwardly projecting flange constituting bolt stops and a keeperengaging and bolt guard member, an outer casing member iXedly connectedto said inner casing member yand having inwardly projecting top and sidewalls, a bolt pivotally mounted in said casing and having a keeperengaging portion projecting through said opening in the casing bottomwall and having an arm projecting from its pivot, a bolt actuatingspring mounted in said casing, a first bolt yrelease member pivotallymounted in said casing `and positioned to engage said bolt and phovidedWith a handle disposed on lthe outer side of said outer casing member, asecond bolt release member pivotally mounted in said casing in coactingrelation with said arm of said bolt, a handle disposed on the outer sideof the closure member and operatively connected to said second boltrelease member, locking means comprising a detent adjustably mounted insaid casing in coacting relation to said second bolt release member, keyactuated means operable from the outer side of said closure member fordisengaging said detent from said second bolt release member and holdingit in disengaged position, a keeper mounted on said sill and having abolt receiving opening therein and into which said ange on said casingbottom projects when the closure is in closed position and whichconstitutes a guard for said bolt when it is in keeper engagingposition, said keeper having a second opening therein surrounded by aninwardly converging flange, and a closure aligning and anchor memberhaving `a tapered tip mounted on said casing to project downwardlytherefrom into guiding and lateral supporting engagement with saidsecond opening in said keeper and having slidably itting engagementtherewith.

7. The combination with ea sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, meansfor relasably and lockingly securing said closure member to said sillcomprising a casing including an inner casing member having an outwardlyprojecting bottom wall #with a bolt opening therein with a downwardlyprojecting iiange constituting bolt stops and a keeper engaging and boltguard member, an outer casing member ctxedly connected to said innercasing member and having inwardly projecting top 'and side walls, a boltpivotally mounted in said casing and having a keeper engaging portionprojecting through said opening in the casing bottom wall and having anarm projecting from its pivot, a bolt actuating spring'molunted in saidcasing, a tirst bolt release member pivotally mounted in said casing andpositioned to engage said bolt and provided with a handle disposed onthe outer side of said outer casing member, a second bolt release memberpivotally mounted in said casing in coacting relation with said arm ofsaid bolt, a handle disposed on the outer side of the closure member andoperatively connected to said second bolt release member, locking meanscornprising a detent adjustably mounted in said casing in coactingrelation to said second bolt release member, key actuated means operablefrom the outer side of said closure member for disengaging said detentfrom said second Ibolt release member and holding it in disengagedposition, a keeper mounted on said sill, said keeper having a secondopening therein, yand a closure aligning and anchor member mounted onsaid casing to project downwardly therefrom into guiding and lateralsupporting engagement with said second opening in said keeper.

8. The combination with a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, meansfor releasably and lockingly securing said closure member to said sillcomprising a casing mounted on said closure member, a spring actuatedbolt pivotally mounted in said casing and having a keeper engagingportion projecting downwardly from said casing, a iirst bolt releasemember pivotally mounted in said casing and positioned to engage saidbolt below its pivot and provided with a handle disposed on the innerside of said closure member, a second bolt release member pivotallymounted in said casing in coacting relation to said bolt, a handledisposed on the outer side of the closure member and operativelyconnected to said second bolt release member, locking means comprising adetent adjustably mounted in said casing in coasting relation to saidsecond bolt release member, key actuated means operable from the outerside of said closure member for disengaging said detent from said secondbolt release member and holding it in disengaged position, a keepermounted on said sill, said keeper having a bolt receiving openingtherein surrounded by an inwardly converging flange, and a closurealigning and closure anchor member having a tapered tip mounted on saidclosure member to project downwardly from the bottom edge thereof intoguiding and lateral supported engagement with said opening in saidkeeper.

9. The combination with a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, meansfor releasably andlock-ingly securing said closure member to said sillcomprising a casing mounted on said closure member, a spring actuatedbolt pivotally mounted in said casing and having a keep engaging portionprojecting downwardly from said casing, a first bolt release memberpivotally mounted in said casing and positioned to engage said boltbelow its pivot and provided with a handle disposed on the inner side ofsaid closure member, a second bolt release member pivotally mounted insaid casing in coacting relation to said bolt, a handle disposed on theouter side of the closure member and operatively connected to saidsecond bolt release member, locking means comprising a detent adjustablymounted in said casing in coacting relation to said second bolt releasemember, key actuated means operable from the outer side of said closuremember for disengaging said detent from said second bolt release member,a keeper mounted on said sill.

l0. rThe combination with a sill and a closure member reciprocatinglymounted for opening and closing adjustment relative to the sill, meansfor releasably and lockingly securing said closure member to said sillcomprising a casing mounted on said closure member, a spring actuatedbolt pivotally mounted in said casing and having a keeper engagingportion projecting downwardly from said casing, a rst bolt releasemember pivotally mounted in said casing and positioned to engage saidbolt below its pivot and provided with a handle disposed on the innerside of said closure member, a second bolt release member pivotallymounted in said casing in coacting relation to said bolt, a handledisposed on the outer side of the closure member and operativelyconnected to said second bolt release member, locking means comprising adetent adjustably mounted in said casing in coacting relation to saidsecond bolt release member, key actuated means operable from the outerside of said closure member for d-isengaging said detent from saidsecond bolt release member and holding it in disengaged position, akeeper mounted on said sill, said keeper having a bolt receiving openingtherein, and a closure aligning and closure anchor member mounted onsaid closure member to project downwardly from the bottom edge thereofinto guiding and lateral supported engagement with said opening in saidkeeper.

l1. A lock assembly comprising a casing adapted to be mounted on aslidable closure, a spring actuated bolt pivotally mounted in saidcasing and having a keeperengaging portion projecting therefrom, a rstbolt releasing member pivotally mounted in said casing and positioned toengage said bolt at one side of its pivot and provided with a handledisposed on one side of said casing, a second bolt releasing memberpivotally mounted in said casing and being engageable therewith on theother side of its pivot and provided with a handle disposed on the otherside of said casing, means for locking said second bolt release memberin retracted position comprising a detent adjustably mounted in saidcasing in coacting relation to said second bolt release member, keyadjustable means for retracting and holding said detent in itslretracted position, said detent ybeing automatically engageable withsaid second bolt release member when released from said retracting andholding means, a keeper having a bolt opening therein, and an aligningmember projecting `from said casing and having a tapered tip, saidkeeper having an opening therein dimensioned to slidably and ttinglyreceive said aligning member.

12. A lock assembly comprising a casing adapted to be mounted on aslidable closure, a spring actuated bolt pivotally mounted in saidcasing and having a keeperengaging portion projecting therefrom, a rstbolt releasing member pivotally mounted in said casing and positioned toengage said bolt at one side :of its pivot and provided with a handledisposed on one side of said casing, a second bolt releasing memberpivotally mounted in said casing and being engageable therewith on theother side of its pivot and provided with a handle disposed on the otherside of said casing, means -for locking said second bolt release memberin retracted position comprising a detent adjustably mounted in saidcasing in coacting relation to said second bolt release member, keyadjustable means for retracting and holding said detent in its retractedposition, said detent being automatically engageable -With said secondbolt release member when released from said retracting and holdingmeans, and a keeper having a ybolt opening therein.

13. A lock assembly comprising a casing adapted to be mounted on aslidable closure, a spring actuated bolt pivotally mounted in saidcasing and having a keeperengaging portion projecting therefrom, a firstbolt releasing mem-ber pivotally mounted in said casing and positionedto engage said bolt at one side of its pivot and provided with a handledisposed on one side of said casing, a second bolt releasing memberpivotally mounted in said casing and being engageable therewith on theother side of its pivot and provided with a handle disposed on the otherside of said casing, means for locking said second bolt release memberin retracted position comprising a detent adjustably mounted in saidcasing in coacting relation to said second bolt release member, keyadjustable means for retracting and holding said detent in its retractedposition, said detent being automatically engageable with said secondbolt release member when released from said retractin-g and holdingmeans, and a keeper having a bolt opening therein provided with aninwardly inclined outer portion with which said bolt engages as it isadvanced to locked position.

y14. A lock assembly comprising a casing adapted to be mounted on areciprocating closure, a spring actuated bolt pivotally mounted in saidcasing and having a keeperengaging portion projecting therefrom, a rstbolt releasing member pivotally mounted in said casing and positioned toengage said 1bolt at one side of its pivot and provided with a handleydisposed on one side of said casing, a second bolt releasing memberpivotally mounted in said `casing and being engageable therewith on t-heother side of its pivot and provided with a handle disposed on the otherside of said casing, means for locking said second bolt release memberin retracted position comprising a detent adjustably mounted in saidcasing `in coasting relation lto said second bolt release member, keyadjustable means for retracting and holding said detent in retractedposition, said detent being automatically engageable Awith said secondbolt release member when released from said retracting and holdingmeans, and a keeper having a bolt opening therein and an aligning memberprojecting fnom said casing, said keeper having an `opening thereinidimensioned to -guidingly receive said aligning mem-ber.

15. A lock assembly comprising la casing adapted to be mounted on areciprocating closure, a spring actuated bolt pivotally mounted in saidcasing and having a keeperengaging portion projecting therefrom, a rstbolt releasing member pivotally mounted in `said casing and positionedto engage said bolt at one side of its pivot and provided with a handledisposed on one side of said casing, a second bolt releasing memberpivotally mounted in said ycasing and being engageable therewith on theother side of its pivot and provided -with a handle disposed on theother side `of said casing, means for locking said second bolt releasemember in retracted position comprising a detent adjustably mounted insaid casing in coacting relation to said sec-ond bolt release member,and key adjustable means Ifor retracting and holding said ldetent inretracted position.

References Cited in the le of this patent UNITED STATES PATENTS2,243,155 Hizdos May 27, 1941 2,368,840 Jones Feb. 6, 1945 2,540,686Milburn Feb. 6, 195.1 2,736,590 Roethel Feb. 28, 1956 2,741,507 AmbliApr. 10, 1956 2,793,521 Cannon May 28, 1957 2,930,645 Dall Mar. 29, 1960

15. A LOCK ASSEMBLY COMPRISING A CASING ADAPTED TO BE MOUNTED ON ARECIPROCATING CLOSURE, A SPRING ACTUATED BOLT PIVOTALLY MOUNTED IN SAIDCASING AND HAVING A KEEPERENGAGING PORTION PROJECTING THEREFROM, A FIRSTBOLT RELEASING MEMBER PIVOTALLY MOUNTED IN SAID CASING AND POSITIONED TOENGAGE SAID BOLT AT ONE SIDE OF ITS PIVOT AND PROVIDED WITH A HANDLEDISPOSED ON ONE SIDE OF SAID CASING, A SECOND BOLT RELEASING MEMBERPIVOTALLY MOUNTED IN SAID CASING AND BEING ENGAGEABLE THEREWITH ON THEOTHER SIDE OF ITS PIVOT AND PROVIDED WITH A HANDLE DISPOSED ON THE OTHERSIDE OF SAID CASING, MEANS FOR LOCKING SAID SECOND BOLT RELEASE MEMBERIN RETRACTED POSITION COMPRISING A DETENT ADJUSTABLY MOUNTED IN SAIDCASING IN COACTING RELATION TO SAID SECOND BOLT RELEASE MEMBER, AND KEYADJUSTABLE MEANS FOR RETRACTING AND HOLDING SAID DETENT IN RETRACTEDPOSITION.